Al Robertson

Suzuki cross-coupling reactions of aryl halides in phosphonium salt ionic liquid under mild conditions

The Suzuki cross-coupling of aryl boronic acids with aryl halides, including aryl chlorides, proceeds in the phosphonium salt ionic liquid tetradecyltrihexylphosphonium chloride under mild conditions.

Novel chiral phosphines derived from limonene: the synthesis and structure of 4,8-dimethyl-2-phosphabicyclo[3.3.1]nonane

Abstract The radical addition of PH 3 to limonene results in the formation of 4,8-dimethyl-2-phosphabicyclo[3.3.1]nonane, which has been characterized by X-ray crystallographic analyses of its oxidation products, 2-(4-methylcyclohexyl)propylphosphonic acid and 4,8-dimethyl-2-phosphabicyclo[3.3.1]nonan-2-ol-oxide.

Synthesis of Dibenzo[b,f][1,4]oxazepin-11(10H)-ones via Intramolecular Cyclocarbonylation Reactions Using PdI2/Cytop 292 as the Catalytic System

The intramolecular cyclocarbonylation of substituted 2-(2-iodophenoxy)anilines was catalyzed by PdI(2) and 1,3,5,7-tetramethyl-6-phenyl-2,4,8-trioxa-6-phospha-adamantane (Cytop 292) in an efficient manner. A series of substituted dibenzo[b,f][1,4]oxazepin-11(10H)-ones were prepared in good yields under mild reaction conditions.

Efficient Palladium/1,10-Phenanthroline-Catalyzed Reductive Carbonylation of Mono- and Dinitroarenes to Urethanes in Phosphonium Salt Ionic Liquids

The highly reactive and selective reductive carbonylation of mono- and dinitroarenes to the corresponding mono- and diurethanes was carried out in the presence of a PdCl2/Phen catalytic system, using PSIL110[C14H29(C6H13)3P(+)PF6(-)] as the ionic liquid under mild reaction conditions. No cocatalyst is required.